How to Implement network Identity Access OMNeT
To implement the network Identity and Access Management (IAM) in OMNeT++, we have to handle the user identities and based on validation, authorization and auditing mechanisms, it should have the control of resources access by simulating a network environment. Follow the step-by-step procedure to implement IAM in OMNeT++:
Step-by-Step Implementation:
- Define the Network Topology
State the network topology which has various clients, a server, a database server for storing credentials, an authentication server (AuthServer), and a router. It will permit us to simulate interactions amongst users and the network, and Execute IAM mechanisms.
network IAMNetwork
{
submodules:
client1: StandardHost {
@display(“p=100,100”);
}
client2: StandardHost {
@display(“p=100,200”);
}
router: Router {
@display(“p=300,150”);
}
appServer: StandardHost {
@display(“p=500,150”);
}
dbServer: StandardHost {
@display(“p=700,150”);
}
authServer: AuthServerModule {
@display(“p=500,250”);
}
firewall: FirewallModule {
@display(“p=300,250”);
}
connections:
client1.ethg++ <–> Eth100M <–> router.ethg++;
client2.ethg++ <–> Eth100M <–> router.ethg++;
router.ethg++ <–> Eth100M <–> firewall.in++;
firewall.out++ <–> authServer.in++;
authServer.out++ <–> appServer.ethg++;
appServer.ethg++ <–> Eth100M <–> dbServer.ethg++;
}
- Implement the Firewall Module
A firewall filters traffic and blocks illegal access to the servers and the authentication system.
Firewall Module
// FirewallModule.cc
#include <omnetpp.h>
#include “inet/common/INETDefs.h”
#include “inet/common/packet/Packet.h”
#include “inet/networklayer/ipv4/Ipv4Header_m.h”
using namespace omnetpp;
using namespace inet;
class FirewallModule : public cSimpleModule
{
protected:
virtual void initialize() override;
virtual void handleMessage(cMessage *msg) override;
bool isAllowed(Packet *packet);
};
Define_Module(FirewallModule);
void FirewallModule::initialize()
{
EV << “Firewall Module Initialized” << endl;
}
void FirewallModule::handleMessage(cMessage *msg)
{
if (Packet *packet = dynamic_cast<Packet *>(msg)) {
if (isAllowed(packet)) {
send(packet, “out”);
} else {
EV << “Packet dropped by firewall.” << endl;
delete packet;
}
}
}
bool FirewallModule::isAllowed(Packet *packet)
{
const auto& networkHeader = packet->peekAtFront<Ipv4Header>();
std::string source = networkHeader->getSrcAddress().str();
std::string destination = networkHeader->getDestAddress().str();
// Example: Block traffic from specific IP addresses or to specific ports
if (source == “192.168.1.100” || destination == “192.168.1.200”) {
return false; // Block traffic
}
return true; // Allow all other traffic
}
- Implement the Authentication Server (AuthServer)
The AuthServer module is accountable for authenticating users depends on their credentials. It can communicate with a database server to certify user credentials and issue tokens for authenticated sessions.
Authentication Server Module
// AuthServerModule.cc
#include <omnetpp.h>
#include “inet/common/INETDefs.h”
#include “inet/common/packet/Packet.h”
#include <string>
using namespace omnetpp;
using namespace inet;
class AuthServerModule : public cSimpleModule
{
protected:
virtual void initialize() override;
virtual void handleMessage(cMessage *msg) override;
bool authenticateUser(Packet *packet);
std::string issueToken(const std::string &username);
};
Define_Module(AuthServerModule);
void AuthServerModule::initialize()
{
EV << “Authentication Server Initialized” << endl;
}
void AuthServerModule::handleMessage(cMessage *msg)
{
if (Packet *packet = dynamic_cast<Packet *>(msg)) {
if (authenticateUser(packet)) {
std::string token = issueToken(“validUser”);
EV << “User authenticated. Issuing token: ” << token << endl;
// Simulate sending token back to client
send(packet, “out”);
} else {
EV << “Authentication failed. Packet dropped.” << endl;
delete packet;
}
}
}
bool AuthServerModule::authenticateUser(Packet *packet)
{
// Example: Simple authentication based on packet content
const auto& payload = packet->peekData();
std::string authData(payload->str());
// Simulate authentication check (e.g., checking username/password)
if (authData.find(“username=validUser&password=validPass”) != std::string::npos) {
return true; // Authentication successful
}
return false; // Authentication failed
}
std::string AuthServerModule::issueToken(const std::string &username)
{
// Example: Simple token generation (in reality, use secure methods)
return “token12345_” + username;
}
- Implement Role-Based Access Control (RBAC) on the Application Server
The application server checks the roles associated with a user’s token to define if they are authorized to access assured resources.
Application Server Module
// AppServerModule.cc
#include <omnetpp.h>
#include “inet/common/INETDefs.h”
#include “inet/common/packet/Packet.h”
#include <string>
using namespace omnetpp;
using namespace inet;
class AppServerModule : public cSimpleModule
{
protected:
virtual void initialize() override;
virtual void handleMessage(cMessage *msg) override;
bool authorizeAccess(Packet *packet, const std::string &token);
};
Define_Module(AppServerModule);
void AppServerModule::initialize()
{
EV << “Application Server Initialized” << endl;
}
void AppServerModule::handleMessage(cMessage *msg)
{
if (Packet *packet = dynamic_cast<Packet *>(msg)) {
const auto& payload = packet->peekData();
std::string token(payload->str());
if (authorizeAccess(packet, token)) {
EV << “Access granted. Processing request…” << endl;
// Process the request
send(packet, “out”);
} else {
EV << “Access denied. Packet dropped.” << endl;
delete packet;
}
}
}
bool AppServerModule::authorizeAccess(Packet *packet, const std::string &token)
{
// Example: Simple role-based access control (RBAC)
if (token.find(“token12345_validUser”) != std::string::npos) {
return true; // User has the necessary role
}
return false; // Access denied
}
- Implement an Auditing Mechanism
Auditing is vital for tracking access and alterations to resources. The audit module logs all authentication and authorization events.
Audit Module
// AuditModule.cc
#include <omnetpp.h>
#include “inet/common/INETDefs.h”
#include “inet/common/packet/Packet.h”
#include <string>
#include <fstream>
using namespace omnetpp;
using namespace inet;
class AuditModule : public cSimpleModule
{
protected:
std::ofstream auditLog;
virtual void initialize() override;
virtual void handleMessage(cMessage *msg) override;
void logEvent(const std::string &event);
};
Define_Module(AuditModule);
void AuditModule::initialize()
{
EV << “Audit Module Initialized” << endl;
auditLog.open(“audit_log.txt”, std::ios::out | std::ios::app);
}
void AuditModule::handleMessage(cMessage *msg)
{
if (Packet *packet = dynamic_cast<Packet *>(msg)) {
const auto& payload = packet->peekData();
std::string event(payload->str());
logEvent(event);
send(packet, “out”);
}
}
void AuditModule::logEvent(const std::string &event)
{
auditLog << “Audit Event: ” << event << std::endl;
EV << “Logged audit event: ” << event << std::endl;
}
- Integrate the IAM Modules
Within the network, we have to guard the resources and handle identity and access by integrating the FirewallModule, AuthServerModule, AppServerModule, and AuditModule.
network IAMNetwork
{
submodules:
client1: StandardHost {
@display(“p=100,100”);
}
client2: StandardHost {
@display(“p=100,200”);
}
router: Router {
@display(“p=300,150”);
}
appServer: AppServerModule {
@display(“p=500,150”);
}
dbServer: StandardHost {
@display(“p=700,150”);
}
authServer: AuthServerModule {
@display(“p=500,250”);
}
audit: AuditModule {
@display(“p=600,250”);
}
firewall: FirewallModule {
@display(“p=300,250”);
}
connections:
client1.ethg++ <–> Eth100M <–> router.ethg++;
client2.ethg++ <–> Eth100M <–> router.ethg++;
router.ethg++ <–> Eth100M <–> firewall.in++;
firewall.out++ <–> authServer.in++;
authServer.out++ <–> appServer.ethg++;
appServer.ethg++ <–> Eth100M <–> dbServer.ethg++;
appServer.ethg++ <–> Eth100M <–> audit.in++;
}
- Simulate IAM Operations
To test the rigidness of the IAM mechanisms, we have to mimic the numerous IAM operations like authentication, authorization and auditing.
IAM Operations Simulation Module
// IAMOperationsSimulationModule.cc
#include <omnetpp.h>
#include “inet/applications/tcpapp/TcpAppBase.h”
using namespace omnetpp;
using namespace inet;
class IAMOperationsSimulationModule : public TcpAppBase
{
protected:
virtual void initialize(int stage) override;
virtual void handleMessageWhenUp(cMessage *msg) override;
void simulateLogin();
void simulateAccessRequest();
};
Define_Module(IAMOperationsSimulationModule);
void IAMOperationsSimulationModule::initialize(int stage)
{
TcpAppBase::initialize(stage);
if (stage == inet::INITSTAGE_APPLICATION_LAYER) {
scheduleAt(simTime() + 3, new cMessage(“simulateLogin”));
scheduleAt(simTime() + 5, new cMessage(“simulateAccessRequest”));
}
}
void IAMOperationsSimulationModule::handleMessageWhenUp(cMessage *msg)
{
if (strcmp(msg->getName(), “simulateLogin”) == 0) {
simulateLogin();
delete msg;
} else if (strcmp(msg->getName(), “simulateAccessRequest”) == 0) {
simulateAccessRequest();
delete msg;
} else {
TcpAppBase::handleMessageWhenUp(msg);
}
}
void IAMOperationsSimulationModule::simulateLogin()
{
EV << “Simulating user login…” << endl;
sendRequest(“POST /login HTTP/1.1\r\nHost: authServer\r\nContent-Type: application/x-www-form-urlencoded\r\n\r\nusername=validUser&password=validPass”);
}
void IAMOperationsSimulationModule::simulateAccessRequest()
{
EV << “Simulating access request with valid token…” << endl;
sendRequest(“GET /data HTTP/1.1\r\nHost: appServer\r\nAuthorization: Bearer token12345_validUser\r\n\r\n”);
}
- Run the Simulation
Compile and run the simulation in OMNeT++. The AuthServerModule will manage authentication, the AppServerModule will handle authorization, and the AuditModule will record all significant events.
- Analyze the Results
Check the OMNeT++ simulation log to see how the IAM elements managed authentication, authorization, and auditing events. Analyse the audit log file created by the AuditModule to clarify that all events were logged appropriately.
- Extend the IAM Features
You can extend this setup by:
- Implementing more sophisticated authentication mechanisms: Use multi-factor authentication (MFA) or federated identity management.
- Integrating with existing directory services: Simulate the integration of IAM with LDAP or Active Directory.
- Adding fine-grained access controls: Execute more difficult RBAC or attribute-based access control (ABAC) models.
- Simulating real-world scenarios: Examine the system against capable identity-based attacks like phishing or privilege escalation.
In conclusion, we thoroughly covered the details regarding Network Identity and Access Management’s implementation in OMNeT++. For future references, we can guide you about another simulation process executing IAM. Stay in touch with us if you want to implement Network Identity and Access Management’s OMNeT++tool for your projects. We will supply you with new assistance and simulation service.